HOLLEY FR-83870 Cfm Carburetor

( Brand: Holley ), ( Manufacturer Part Number: FR-83870 ), ( Type: Carburetor ), ( Manufacturer Warranty: No )

Review HOLLEY 870 Cfm Aluminum Carburetor factory Refurbished fits STREET AVENGER

The Holley FR-83870 870 CFM Street Avenger Carburetor is a high-performance fuel delivery system designed for street applications. This carburetor is part of Holley's Street Avenger series, which combines classic style with advanced engineering to deliver reliable and consistent power.

The FR-83870 features a 2-grossinch bore and an 870 CFM airflow rate, making it suitable for larger engines that require more fuel to produce optimal power. The carburetor body is made of aluminum, keeping the weight down while providing excellent heat dissipation. The throat and venturi are machined from billet aluminum for precise dimensions and smooth airflow.

One of the standout features of this carburetor is the Holley's unique Ultra Lite Secondary Design. This innovative design uses lighter, thinner secondary diaphragms to reduce mass and improve response. The secondary metering rods are also hollow, further reducing weight and improving vacuum secondaries' efficiency.

The FR-83870 comes with a 650 CFM power valve and a 4-blade power chamber spline-drive fan blade. It also includes Holley's High Rise Intake Manifold with a 1-inch rise and a 6-bolt flange for easy installation on most small-block Chevrolet applications. The intake manifold comes with a gasket and hardware kit.

The carburetor features Holley's Synergy Base, which allows for easy electronic fuel injection (EFI) conversion. This base is compatible with Holley's EFI systems, enabling users to take advantage of the benefits of electronic fuel delivery.

The Holley FR-83870 870 CFM Street Avenger Carburetor is designed for ease of installation and tuning. It comes with a factory-set primary jetting and secondary needle and jet setup for quick and easy tuning. The primary jets range from 12 to 108, while the secondary needle can be adjusted in 0.1mm increments.

The carburetor includes a full complement of hardware, including mounting brackets, gaskets, and fuel bowls. The fuel bowls are made of aluminum and come with a baffled design to reduce fuel slosh and improve fuel distribution. The carburetor is also EPA-approved, making it a legal choice for street applications.

In summary, the Holley FR-83870 870 CFM Street Avenger Carburetor is a high-performance fuel delivery system designed for street applications. It features a 2-grossinch bore, 870 CFM airflow rate, and innovative Ultra Lite Secondary Design. The carburetor comes with a 650 CFM power valve, a 4-blade power chamber spline-drive fan blade, and a Synergy Base for easy EFI conversion. It is designed for ease of installation and tuning and is EPA-approved for legal street use.

The Holley FR-83870 870 CFM Street Avenger Carburetor is a popular choice among automotive enthusiasts for its high performance and versatility. Here are some pros and cons to help you make an informed decision about purchasing this carburetor:

1. High Flow Rate: The 870 CFM flow rate makes it suitable for high-performance applications, including muscle cars and hot rods. It can deliver a large amount of air and fuel to the engine for improved power and torque.

2. Easily Adjustable: The Holley Street Avenger carburetor features a unique design with a single-plane intake manifold and a built-in power valve. This makes it easy to adjust the idle, fuel mixture, and other critical engine parameters for optimal performance.

3. Durable Construction: The carburetor is made from high-quality materials, including billet aluminum and stainless steel. It is designed to withstand the rigors of high-performance driving and can last for many years with proper maintenance.

4. Versatile: The Holley Street Avenger carburetor is available in various sizes and configurations, making it suitable for a wide range of applications. It can be used with different intake manifolds, fuel systems, and ignition systems, making it a versatile choice for many different types of vehicles.

1. Complex Installation: Installing the Holley Street Avenger carburetor can be a complex process, especially for those who are not experienced with carburetors. It requires careful calibration and adjustment to ensure proper performance.

2. Expensive: The Holley Street Avenger carburetor is more expensive than some other options on the market. However, its high performance and durability make it a worthwhile investment for those who demand the best from their vehicles.

3. Requires Regular Maintenance: Like all carburetors, the Holley Street Avenger requires regular maintenance to ensure optimal performance. This includes regular cleaning, adjustment of the fuel mixture, and replacement of worn parts.

The Holley FR-83870 870 CFM Street Avenger Carburetor is a high-performance and versatile option for those who demand the best from their vehicles. Its high flow rate, easy adjustability, and durable construction make it a popular choice among automotive enthusiasts. However, its complex installation, expense, and required maintenance are important considerations that should be taken into account before making a purchase.

If you are looking for a high-performance carburetor for your muscle car or hot rod and are willing to invest the time and money required for installation and maintenance, then the Holley FR-83870 870 CFM Street Avenger Carburetor is an excellent choice. However, if you are on a tight budget or are not experienced with carburetors, then you may want to consider other options that are more user-friendly and cost-effective.

Details:

100% wet-flow tested by Holley technicians to assure it arrives ready run. Optimized Street calibration that works-out-of-the-box. 36% weight savings. Factory preset electric choke for easy startups or manual choke precise cold start control.

Buyer pays return shipping. A signature is required on all UPS orders over $750. Aluminum construction for maximum weight savings and long lasting shine. Quick Change vacuum housing cap allows youth tune for performance or fuel economy springs included.

Compatible with GM,Chrysler, and Ford A/T kick down linkage. This is an official Holley Performance Factory Refurbished Carburetor. 870 cfm Street Avenger - Aluminum Carburetor-Factory Refurbished.

part #: fr83870 prices

• $599.95-$700.00

specifications carbcoon:

• for models: Street, Avenger
• brand: Holley
• mpn: Fr-83870
• type: Carburetor
• manufacturer warranty: No

offer carbcoon:

• availability: In Stock
• quantity: 1
• sold: 0
• started: May 28, 2025
• options: Ship-to-home

returns carbcoon:

• policy: No Returns

shipping carbcoon:

• carrier: UPS
• type: Calculated
• class: Standard
• cost: $0.00
• service: UPS Ground
• transit: 2-6 Days

general carbcoon:

• Car Truck Parts Accessories > Air Fuel Delivery > Carburetors
• condition: New other see details

payments carbcoon:

• wallet: Apple-pay
• other
• credit card: Visa

seller carbcoon:

• city: Bowling Green, Kentucky
• rating: 99.1%
• # reviews: 74508

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